Sometime after that, it was decided that the Bible teaches that human life begins at conception.
Ask any American evangelical, today, what the Bible says about abortion and they will insist that this is what it says. (Many don’t actually believe this, but they know it is the only answer that won’t get them in trouble.) They’ll be a little fuzzy on where, exactly, the Bible says this, but they’ll insist that it does.
That’s new. If you had asked American evangelicals that same question the year I was born you would not have gotten the same answer.